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In this paper, the market situation, commercial trend and technological progress of unsaturated polyester resin from 2004 to 2005 were reviewed with 17 references.
中文意思:
摘要综述了2004-2005年国外不饱和聚酯树脂的市场动态及技术进展。


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In this paper, the latest progress in the production of chemicals based upon C1 molecules including methane, carbon dioxide, CO and methanol is addressed.本文综合讨论了以含一个碳原子化合物为原料合成化学品和新材料的国内外研究与开发的进展,包括已工业化的技术。
In this paper, the linear accumulative damage theory commonly used for calculation of the fatigue of variable amplitude stress is used to assess the fatigue of the same part of the structure due to the two kinds of stress cycling and the assessment formul引入通常用于计算变幅应力疲劳的线性累积损伤理论,对2种应力循环引起的结构同一部位的疲劳进行评定,给出组合梁负弯矩区栓订焊趾疲劳评定公式。
In this paper, the location and machining of huge workpiece is discussed, some characteristic point coordinates can be obtained by using NC machine tool and measuring equipment, then position of huge wokpiece under machine reference frame can be acquired 摘要针对超大型工件的加工定位问题进行了探讨,提出了利用数控机床本身结合一定的辅助测量设备对加工工件进行测量的方法,然后利用测量点与理论模型体的对应点进行数据计算,从而快速确定工件位置。
In this paper, the main characteristics of intelligent protector of valve-controlled lead-acid batteries applied in diesel locomotives are expounded, and its necessity is discussed.阐述了内燃机车用阀控式密封铅酸蓄电池智能保护器的主要技术特性和加装智能保护器的必要性。
In this paper, the marine route survey factors, such as water depth, bottom slope, soil shearing strength, tidal current and thunderstorm and their roles in the submarine fibre-optic cable engineering are introduced, and their roles and necessities in the摘要介绍了水深、海底坡度、土壤剪切张度以及潮流、雷暴等海洋路由各勘测要素及其在海底光缆通信施工中的作用,并对它们在施工中的作用及其必要性进行了评价,从而使海洋路由勘测与施工的需要结合得更紧密,更具有针对性。
In this paper, the market situation, commercial trend and technological progress of unsaturated polyester resin from 2004 to 2005 were reviewed with 17 references.摘要综述了2004-2005年国外不饱和聚酯树脂的市场动态及技术进展。
In this paper, the maximum torque per ample (MTPA) control in permanent magnet synchronous motor (PMSM) direct torque control (DTC) driving system was studied.摘要在永磁同步电动机直接转矩控制和最大转矩电流比控制理论基础上,研究了永磁同步电动机直接转矩控制驱动系统最大转矩电流比控制的实现。
In this paper, the mechanism and forming process of the cracks in view of the stress corrosion were analyzed accounting for the pressure vessels working in the atmosphere of wet hydrogen sul-phide, sodium hydroxide or liquidized ammonia.本文分析了压力容器及设备在湿润硫化氢、氢氧化钠溶液和液氨介质中应力腐蚀开裂的机理和应力腐蚀开裂的过程。
In this paper, the mechanism of the ionosphere contamination from the ionosphere distortion is exposed for the first time by analyzing the process of HF radar signal processing.该文通过对高频雷达信号处理过程的分析,阐明了电离层扰动对回波信号污染的机理。
In this paper, the method combined the “S”shape sediment control dam with the dredged channel has been put forward.为此,在比较各种疏浚方案效果的情况下,提出了挖泥槽与增设折线型防淤堤相结合的清淤疏浚措施。
In this paper, the method of dimensional analysis is used to analyze the interaction between ocean current, pipeline and seabed, and the similarity laws that should be followed in the small-scale laboratory experiments are established.文章应用量纲分析方法对海流、管道与海床之间的动力耦合作用进行了分析,确定了在实验模拟中应遵循的相似准则。
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